How many chill hours does 91377 get?

91377 averages 444 chill hours per winter, ranging from 278 to 803 across the last 10 years.

What hardiness zone is 91377?

91377 is in USDA hardiness zone 10b.

Location almanac

The short answer

91377 averages 444 chill hours per winter (278–803 across 10 years) in USDA zone 10b.

91377 climate
Average chill hours	444 (278–803 across 10 winters)
USDA hardiness zone	10b

Computed from 10 winters of ERA5 hourly temperature (Open-Meteo, 2015–2025); zones from USDA PHZM 2023. Data updated July 3, 2026. See methodology.

Every variety in our database, checked against 91377’s chill hours and zone:

Chill and zone requirements are comfortably met in 91377.

Show 17 more good fit varieties

Possible in a good year or a favorable microclimate — click through for the caveats.

How many chill hours does 91377 get?: 91377 averages 444 chill hours per winter, ranging from 278 to 803 across the last 10 years.
What hardiness zone is 91377?: 91377 is in USDA hardiness zone 10b.

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[1] Open-Meteo / Copernicus ERA5. Historical Weather API (hourly 2m temperature) — accessed July 2026
[2] USDA / PRISM (Oregon State University). 2023 USDA Plant Hardiness Zone Map — accessed July 2026